I have recently purchased the Webster Unabridged dictionary by Slovoed from an app maker Paragon for $60 dollars (back in November, I think). Recently, Paragon released version 2.0 of said app. However, App store has not notified me of the update but is instead showing version 2.0 for the same price as 1.0
See this image:
I don't think Mantis is alone in this "game" the App store is playing with customers AND developers. Paragon wrote me an email not so long ago saying they are at a loss why two separate versions are still listed at the same price and why I can't install the update.